Rewards other than game access can't be redeemed yet (but server access is currently restriced as well). I don't know when they will release the soundtrack, I'm also eager to get my hands on the whole thing and from what I've heards it's even a little longer than promised :D

And to hold you over till that much desired release date here's a link to Denny schneidemesser homepage who is the composer of that album, the site also has links to his Soundcloud page. I greatly enjoy some of his more relaxing songs like Wolf song which I usually listen too when I need to just calm down before going to sleep. I also like Dreams of flight but that's more for when I want to draw and who can forget Veni Vidi Vici for when I feel like writing about something science fiction.